S1 E1 • Puniru Returns

After Puniru goes missing in the middle of training to become cuter, Kotaro receives an unexpected package. Source: Crunchyroll

Première diffusion : 6 juillet 2025

S1 E2 • Going on a Journey with My Childhood Friend Slime in Another World. And Valentine's, Too!

Kotaro is hit by a truck and finds himself in a world of swords and sorcery. Puniru learns about Valentine's. Source: Crunchyroll

Première diffusion : 13 juillet 2025

S1 E3 • Rune Rune Dance

When Runru breaks down one day, Puniru and Kotaro must find a way to have her repaired, but at what cost? Source: Crunchyroll

Première diffusion : 20 juillet 2025

S1 E4 • A Being More Perfect Than a Toy

After a science lab mishap, Dr. Mado unveils his latest creation: a super-intelligent robot made of slime! Source: Crunchyroll

Première diffusion : 27 juillet 2025

S1 E5 • Puniru Powers Up?! See It for Yourself!

Kotaro has big plans for the summer, but could he be his own worst enemy? Meanwhile, Puniru seeks to power up. Source: Crunchyroll

Première diffusion : 3 août 2025

S1 E6 • A Human Happy Ending

Gelee becomes the center of attention among the school's boys, including Kotaro, much to Puniru's chagrin. Source: Crunchyroll

Première diffusion : 10 août 2025

S1 E7 • A Midsummer's Runrune Resort

Alice invites Kotaro to stay at Runrune Resort, but all Kotaro can think about is Gelee and her advances. Source: Crunchyroll

Première diffusion : 17 août 2025

S1 E8 • Trick or Kawaii!

Gelee joins Kotaro's class as a student, to her chagrin. Meanwhile, Puniru plans a big surprise for Halloween. Source: Crunchyroll

Première diffusion : 24 août 2025

S1 E9 • Art Is All About "Kawaii"!

Hodai hatches a scheme to discredit Kotaro in Alice's eyes by having him face Nanpa in an artistic face-off. Source: Crunchyroll

Première diffusion : 31 août 2025

S1 E10 • Friendly Enough to Always Argue

Kotaro gets into a big fight with Puniru, who runs away to Mami's apartment and meets the Kirara family. Source: Crunchyroll

Première diffusion : 7 septembre 2025

S1 E11 • The Human Condition

Kotaro holds a study group with friends, but his careless remark to Gelee ends up having dire consequences. Source: Crunchyroll

Première diffusion : 14 septembre 2025

S1 E12 • That's What the World Calls Love

Puniru turns into a perfect human girl, but Kotaro doesn't seem as happy to hear the news as everyone else. Source: Crunchyroll

Première diffusion : 21 septembre 2025